Depends on your university goals, if you need CCC and get CCC that's good, if you need AAB and get CCC then that's a poor result. for what i needed last year when i was applying for medical school, i needed AAA, therefore AAA was good, AAB would not have been not good enough.
Like others have said, it entirely depends on the subject. For example I would consider a B in further maths a much better result than an A* in art and design.
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